Botanical name: 

Senecio species contain livertoxic pyrrolizidine alkaloids. Read more here. -Henriette

Erigeron sive senecio.

A common weed in our gardens, and upon walls, with little yellow flowers, and downy seeds; it grows eight inches high: the stalk is round, fleshy, tolerably upright, and green or purplish: the leaves are oblong, broad, blunt, and divided at the edges. The flowers are small and yellow; they grow in a sort of long cups at the tops of the stalks and branches.

The juice of this herb is a gentle and very good emetic. It causes vomiting without any great irritation or pain; and it is also good for cutaneous foulnesses applied outwardly.

The Family Herbal, 1812, was written by John Hill.